This is a topic that comes up all the time, with adoptive mothers, especially those who do not take domperidone.  I, personally, had good results at reducing the drop in production by increasing my intake of fenugreek and fennel tea, starting a few days before the expected period.  I made mine from whole seeds, rather than prepared teabags or capsules.  If it's not steeped longer than five minutes, it doesn't get bitter and tastes quite nice, so that's one idea.  
 		 	   		  
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